Setting R working directories on Windows - was RE: Why does R start in wrong working directory ...

My preference is to start in different working directories depending on which
project I am working on. R_USER is not a project directory. One way to do that
is to double-click on an RData file located where you want to start. 

Saving an empty 'empty.RData' image in my project directories when I start a project is my preferred tactic. Always works independent of the physical location.

Another way is to create a new shortcut in each directory. 

Did you mean 'shortcut _to_'?  That is, set up a shortcut somewhere like the desktop that points to Rgui.exe but with different 'Start in:' values for each project? Or literally a shortcut (probably with blank 'Start in:') in each project directory? (Both should work)

Another way is to add a line to
your script that sets the directory appropriately, though that makes sharing the
scripts harder. 

This is indeed my most-hated way of doing this. It is very awkward when I move to a different machine - which I do a lot when shifting between working at work, working at home and working offsite on a laptop.

Another way is to use RStudio projects.

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